CN203229270U - Auto-winding winder - Google Patents

Abstract

The utility model relates to an automatic retractable wire reel, which comprises an insulating circular shell, and a ring spring is coaxially installed in the shell. In the middle of the body, a hole is made in the middle and edge of one side of the shell, and a test line is installed at the tension end of the coil spring. The tension end is located between the test line connection ends. One end of the test line extends Out of the outlet hole made in the outer middle of the housing, the other end protrudes out of the outlet hole made in the outer edge of the housing, and the connecting ends of the two test lines are made with insulating protective sleeves. In the utility model, the test line and the coil spring are kept insulated to ensure the connection function of the test circuit; the test line can be connected as straight as possible by using the coil spring, avoiding the winding of the test line, making the test circuit clear and easy to check, and the test line can be retracted automatically , It greatly reduces the time for finishing the test line, and can also wind the test line with a suitable length according to the needs, reducing the intermediate joints of the test line.

Description

Automatic retractable cord reel

technical field

The utility model belongs to the field of auxiliary equipment for electromechanical detection equipment, in particular to an automatic recovery type wire reel.

Background technique

During the high-voltage test, dozens of test lines are often connected at the same time. Because each test line has different lengths and many loops, the test lines are easy to be confused, making it difficult to check the connection status of the loops. The test line is difficult and time-consuming. At the same time, due to the limited length of each test line, when multiple test lines are connected in series, there are risks to the insulation of the joint and the stability of the connection.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide an automatic retractable cord reel with simple structure and easy arrangement.

The technical scheme that the utility model adopts is:

An automatic retractable cord reel, comprising an insulating circular shell, a coil spring is coaxially installed in the shell, the coil spring includes a contraction end and a tension end, and the contraction end is fixed in the middle of the shell, One outlet hole is made in the middle and the edge of one side of the housing respectively, and a test line is installed at the tensile end of the coil spring. The tensile end is located between the connecting wire ends of the test line. The other end of the outlet hole protrudes from the outlet hole made on the outer edge of the casing, and the two test wire connection ends are all made with insulating protective sleeves.

Moreover, a positioning pin is installed on the outer position of the housing around each outlet hole through an insulated wire, and each positioning pin is one-to-one corresponding to and squeeze-fitted with the outlet holes around it.

Moreover, the distance between the tension end of the coil spring and the connection end of the test line protruding from the outlet hole formed in the outer middle part of the housing is greater than the tensile limit radius of the coil spring.

Advantage and positive effect of the present utility model are:

1. In the utility model, the test line and the coil spring are kept insulated to ensure the function of the test circuit connection; the use of the coil spring enables the test line to be connected as straight as possible, avoiding the winding of the test line, making the test circuit clear and easy to check. After the test, The test line can be automatically retracted, which greatly reduces the time for finishing the test line, and can also wind the test line with a suitable length according to the needs, reducing the intermediate joints of the test line.

2. One end of the test line in the utility model is led out through the outlet hole in the center of the shell, which is beneficial to reduce the stretching length of the test line at the fixed end when the test line is stretched; while the other end can be retracted into the shell by the contraction of the coil spring, making full use of the coil The guiding function of the spring ensures the flexibility of the test line and avoids jamming.

3. In the utility model, the outer diameter of the insulating protective sleeve is relatively large, and the connection end of the test line will not be returned to the housing. The two outlet holes are squeezed through the positioning pins respectively, and the outlet holes are blocked, so that the test line is positioned and indirectly used. The test lead connection end will not retract into the housing.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is a cross-sectional view along A-A in Fig. 2 .

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the utility model.

An automatic retractable cord reel, comprising a cylindrical insulating housing 1, a coil spring 10 is coaxially installed in the housing, the coil spring includes a contraction end 12 and a tension end 11, and the coil spring contraction end is fixed on the In the middle part of the housing, a wire outlet hole 2 and 4 are respectively formed at the middle part and edge of one side of the housing, and a positioning pin 3 and 7 is installed on the outer position of the housing around each wire outlet hole through an insulating wire 8, each The two positioning pins correspond to the outlet holes around them one by one and press fit.

A test line is installed at the tension end of the coil spring, and the tension end of the coil spring is located between the two connection ends of the test line. 5 protrude from the outlet hole made on the outer edge of the housing, and the two test line connection ends are all shaped with insulating protective sleeves 6, and the outer diameter of each insulating protective sheath is greater than the aperture of each outlet hole.

The distance between the tension end of the coil spring and the connection end of the test line protruding from the outlet hole made in the outer middle part of the housing is greater than the tensile limit radius of the coil spring, that is, the distance between the tension end of the coil spring and the outlet hole made in the outer middle part of the housing The distance between the contracted end and the stretched end of the coil spring when the distance between the connecting ends of the test line is greater than the tensile limit of the coil spring.

The using method of the present utility model is:

The two connecting ends of the test line extend out of the casing and connect with the equipment to be tested to form a circuit. The two outlet holes are respectively squeezed through the positioning pins, and the outlet holes are blocked, thereby positioning the test line and preventing the coil spring from moving the test line. After the test, the positioning pin is released, and the test line will be driven back to the housing by the contraction of the coil spring. Due to the large outer diameter of the insulating protective sleeve, the connection end of the test line will not return to the housing.

Since the distance between the tension end of the coil spring and the connecting end of the test line protruding from the outlet hole made in the outer middle part of the housing is greater than the tensile limit radius of the coil spring, the connecting end of the test wire protruding out of the outlet hole made in the outer middle part of the housing is even When the coil spring is stretched to the limit, it will not be brought back by the coil spring contraction.

Claims (3)

1. An automatic retractable cord reel, characterized in that: it includes an insulating circular shell, and a coil spring is coaxially installed in the shell, the coil spring includes a contraction end and a tension end, and the contraction end is fixed In the middle of the shell, there is a wire outlet hole in the middle and edge of one side of the shell, and a test line is installed at the tension end of the coil spring. The tension end is located between the connection ends of the test line. One end protrudes from the outlet hole made in the outer middle of the housing, the other end protrudes from the outlet hole made in the outer edge of the housing, and the connecting ends of the two test lines are made with insulating protective sleeves. 2. The automatic retractable cord reel according to claim 1, characterized in that: a positioning pin is installed on the outer position of the housing around each outlet hole through an insulating wire, each positioning pin and its surroundings The outlet holes correspond to each other and are extruded to fit. 3. The automatic retractable cord reel according to claim 1, characterized in that: the distance between the tension end of the coil spring and the connection end of the test line of the outlet hole made in the outer middle of the housing is greater than that of the coil spring tension Extension limit radius.

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